As Nessuno said, the distinction that I make about usage and equipment is like the difference between listening to a Hi-Fi setup fed by a standalone CD player while sitting on a couch, and listening to some FLACs through "desktop speakers" (monitors or whatever) connected somehow to a PC, while sitting at a desk.

I don't see a difference in usage between any "desktop speakers" (whatever their price is) and "studio monitors", if they all sit on a desk, if they're all self-powered and connected to some kind of PC audio device (soundcard, USB DAC, whatever). I also don't really see the particularity of PA speakers.

That said, my knowledge about speakers is very limited, as I almost never use any. So maybe you could come up with a list of options to add to the poll, describing precisely what they are, how they are used, what they're connected to, and generally speaking, what sets them apart.

Note: I'd like to reiterate that price and quality are not within the scope of this poll, notably because price is not an accurate indicator of quality, and quality is quite subjective.